You swap the bottle with one dead cat in it for another. You often use this little guy to break in the planes, like an intrepid test pilot.
Not while it's in the bottle though. That would be ridiculous, since the bottles are sort of just inventory abstractions. You have to break the bottle first, before you can get serious about breaking some glass.
Hey check it out. Every week we'll be revealing some new troll characters from Hiveswap until Act 2 is out. Follow the Troll Call here, and meet the first two here. Expect a few more surprises like this to drop in coming weeks.